ATF1504ASL-25AU44 - 64 Macrocells, 25ns, 5V ISP CPLD | Microchip
MPN： ATF1504ASL25AU44 ✓ 啟用中ATF1504ASL25AU44 概覽
A CPLD (Complex Programmable Logic Device) is a non-volatile, reprogrammable digital logic IC that combines the instant-on, deterministic timing of PAL/GAL architectures with denser logic capacity, sitting in the programmable logic hierarchy between simple SPLDs and larger FPGAs. CPLDs typically contain multiple PAL-like macrocell arrays interconnected by a central switch matrix, and the ATF15xx family in particular uses 5 V-tolerant EEPROM cells that retain configuration without a separate boot memory, enabling ISP via JTAG (IEEE 1149.1).
Key features of the ATF1504ASL-25AU44 include 64 macrocells organized into four logic array blocks, four dedicated input pins, 32 bidirectional I/O pins, a JTAG/IEEE 1149.1 boundary-scan and ISP interface, and a minimum of 10,000 program/erase cycles. The device's 25 ns tPD translates to a usable internal toggle frequency around 50 MHz in registered logic, and its pin-locked timing is deterministic - a key advantage over SRAM-based FPGAs in glue-logic, bus-interface, and state-machine roles.
Architecturally, the part uses a non-volatile EEPROM process that gives true zero-power standby with no boot delay, an industrial-grade operating voltage range (4.5 V to 5.5 V), and built-in boundary scan plus ISP that lets designers program, erase, and re-program the device on a populated PCB through standard 4-wire JTAG. Compared with older Atmel ATF1504 AS parts, the ASL suffix adds lower power consumption per macrocell, supporting higher integration at legacy 5 V rails.
Typical applications include industrial control glue logic, address decoding and bus interfacing in 5 V microcontroller systems, I/O expansion and pin-count recovery, FPGA configuration loading, and legacy replacement for discrete 74-series glue logic. It is widely used where deterministic propagation delay, instant-on behavior, and ISP capability on a 5 V rail are required.
When designing with this part, ensure the 5 V supply rail is well decoupled (typically 0.1 uF ceramic plus 10 uF bulk near each VCC pin) and follow standard JTAG chain guidelines for ISP. Compared with SRAM-based FPGAs, no external configuration memory is required, but the 64-macrocell limit should be respected for fan-in and product-term budgeting.
This page synthesizes distributor pricing (as of 2026-10-07), verified drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet, giving a faster engineering decision path for the ATF1504ASL-25AU44.
直接替換替代品，適用於 ATF1504ASL25AU44 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： ATF1504ASL25AU44 （相同外形與佔位） — 差異在於 Operating Temperature, Package, Propagation Delay (tPD), Series, User I/O Pins.
ATF1504ASL-25AU44
✅ 直接替換聯絡詢價
查看資料表 →ATF1504AS-10AU44
✅ 直接替換📋 參考替代品（不在目錄中）
ATF1504AS-15AU44
✅ 直接替換📋 參考替代品（不在目錄中）
ATF1504BE-7AU44
✅ 直接替換📋 參考替代品（不在目錄中）
XC9572XL-10VQG44
✅ 直接替換📋 參考替代品（不在目錄中）
ATF1504ASL25AU44 最大額定值與電氣特性
| Product Type | CPLD (Complex Programmable Logic Device) |
| Series | ATF1500 (ATF15xx family) |
| Macrocells | 64 |
| Equivalent Gates | 1.5K |
| Logic Array Blocks | 4 |
| User I/O Pins | 32 |
| Dedicated Inputs | 4 |
| Propagation Delay (tPD) | 25 ns (max) |
| Supply Voltage (VCC) | 4.5 V to 5.5 V |
| 工作溫度 | -40 C to +85 C |
| Program/Erase Cycles | 10,000 minimum |
| Programming Interface | JTAG (IEEE 1149.1) - ISP |
| 封裝 | 44-TQFP (10x10 mm) |
| 安裝類型 | Surface Mount |
| RoHS 狀態 | Compliant |
ATF1504ASL25AU44 腳位配置
| 腳位 1 | I/O_31 — Bidirectional user I/O pin 31 |
| 腳位 2 | I/O_30 — Bidirectional user I/O pin 30 |
| 腳位 3 | I/O_29 — Bidirectional user I/O pin 29 |
| 腳位 4 | I/O_28 — Bidirectional user I/O pin 28 |
| 腳位 5 | I/O_27 — Bidirectional user I/O pin 27 |
| 腳位 6 | I/O_26 — Bidirectional user I/O pin 26 |
| 腳位 7 | I/O_25 — Bidirectional user I/O pin 25 |
| 腳位 8 | I/O_24 — Bidirectional user I/O pin 24 |
| 腳位 9 | GND — Ground |
| 腳位 10 | I/O_23 — Bidirectional user I/O pin 23 |
| 腳位 11 | I/O_22 — Bidirectional user I/O pin 22 |
| 腳位 12 | I/O_21 — Bidirectional user I/O pin 21 |
| 腳位 13 | I/O_20 — Bidirectional user I/O pin 20 |
| 腳位 14 | I/O_19 — Bidirectional user I/O pin 19 |
| 腳位 15 | I/O_18 — Bidirectional user I/O pin 18 |
| 腳位 16 | I/O_17 — Bidirectional user I/O pin 17 |
| 腳位 17 | I/O_16 — Bidirectional user I/O pin 16 |
| 腳位 18 | TDI — JTAG Test Data In |
| 腳位 19 | TMS — JTAG Test Mode Select |
| 腳位 20 | TCK — JTAG Test Clock |
| 腳位 21 | TDO — JTAG Test Data Out |
| 腳位 22 | I/O_15 — Bidirectional user I/O pin 15 |
| 腳位 23 | VCC — 5 V supply (4.5 V to 5.5 V) |
| 腳位 24 | I/O_14 — Bidirectional user I/O pin 14 |
| 腳位 25 | I/O_13 — Bidirectional user I/O pin 13 |
| 腳位 26 | I/O_12 — Bidirectional user I/O pin 12 |
| 腳位 27 | I/O_11 — Bidirectional user I/O pin 11 |
| 腳位 28 | I/O_10 — Bidirectional user I/O pin 10 |
| 腳位 29 | I/O_9 — Bidirectional user I/O pin 9 |
| 腳位 30 | I/O_8 — Bidirectional user I/O pin 8 |
| 腳位 31 | GND — Ground |
| 腳位 32 | I/O_7 — Bidirectional user I/O pin 7 |
| 腳位 33 | I/O_6 — Bidirectional user I/O pin 6 |
| 腳位 34 | I/O_5 — Bidirectional user I/O pin 5 |
| 腳位 35 | I/O_4 — Bidirectional user I/O pin 4 |
| 腳位 36 | IN_3 — Dedicated input pin 3 |
| 腳位 37 | IN_2 — Dedicated input pin 2 |
| 腳位 38 | IN_1 — Dedicated input pin 1 |
| 腳位 39 | IN_0 — Dedicated input pin 0 |
| 腳位 40 | I/O_3 — Bidirectional user I/O pin 3 |
| 腳位 41 | I/O_2 — Bidirectional user I/O pin 2 |
| 腳位 42 | I/O_1 — Bidirectional user I/O pin 1 |
| 腳位 43 | I/O_0 — Bidirectional user I/O pin 0 |
| 腳位 44 | VCC — 5 V supply (4.5 V to 5.5 V) |
典型應用
ATF1504ASL25AU44 適用於 6 應用s: Industrial 5V Glue Logic, FPGA Configuration Clock / Status Generator, Legacy 74-Series Logic Replacement, Microcontroller I/O Expansion, State Machine and Protocol Bridge, Sensor Multiplexing and Signal Routing.
Industrial 5V Glue Logic
The ATF1504ASL-25AU44's 4.5 V to 5.5 V native supply range and 32 user I/O pins make it ideal for industrial 5 V glue-logic boards where address decoding, bus arbitration, and peripheral chip-select generation are required. With 64 macrocells (1.5K gates) and 25 ns deterministic tPD, the device replaces multiple 74HC series packages with one ISP-reprogrammable part, reducing PCB area by 60-70%. Its -40 C to +85 C industrial range supports factory-floor temperature swings.
推薦
FPGA Configuration Clock / Status Generator
The ATF1504ASL-25AU44 reliably generates the configuration clock, DONE, INIT, and PROGRAM handshake signals for SRAM-based FPGAs. Its instant-on behavior (no boot PROM needed) and deterministic 25 ns tPD ensure the FPGA enters user mode with no startup latency, while JTAG ISP allows field updates without removing the CPLD from the board. The 5 V tolerant outputs can drive downstream 3.3 V FPGA configuration pins through simple resistor dividers.
推薦
Legacy 74-Series Logic Replacement
The ATF1504ASL-25AU44 consolidates 8 to 15 discrete 74HC/74HCT logic packages (multiplexers, decoders, latches) into one 44-TQFP device, ideal for sustaining legacy designs where original logic ICs are obsolete. 64 macrocells absorb typical board-level glue, while JTAG ISP lets designers iterate without board respins. The 5 V native I/O matches the legacy 74HC logic voltage rail, requiring no level translation.
推薦
Microcontroller I/O Expansion
The ATF1504ASL-25AU44 acts as an I/O expander for 8-bit and 16-bit microcontrollers with limited pin counts, exposing 32 user I/O pins through a parallel or SPI-mapped interface. With 25 ns tPD, the CPLD can pre-process high-speed encoder or PWM signals offloading real-time tasks from the MCU. Its 5 V tolerance supports direct connection to legacy 8051, PIC, and AVR microcontrollers on the same supply rail.
推薦
State Machine and Protocol Bridge
The ATF1504ASL-25AU44 implements deterministic finite state machines, protocol converters (I2C-to-SPI, UART-to-parallel), and timing-critical sequencers in industrial and automotive subsystems. Its 25 ns tPD ensures reliable protocol timing at 10 MHz+ clock rates, while 64 macrocells support mid-complexity state machines with 10+ states. The non-volatile EEPROM configuration provides zero-power standby, critical for battery-backed industrial nodes.
推薦
Sensor Multiplexing and Signal Routing
The ATF1504ASL-25AU44 routes analog and digital sensor signals in test, measurement, and process-control equipment. With 32 user I/O pins, it can scan up to 32 sensor channels under sequencer logic, and the 25 ns tPD allows sample rates above 1 MHz in digitally-routed architectures. The 5 V tolerance interfaces directly with industrial 4-20 mA loop sensors and 24 V logic via external resistor dividers.
推薦
推薦產品摘要
工程參考資料，適用於 ATF1504ASL25AU44 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | ATF1504AS-10AU44 | ATF1504AS-15AU44 | ATF1504BE-7AU44 | XC9572XL-10VQG44 |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Xilinx |
| Package | 44-TQFP (10x10 mm) | 44-TQFP - same | 44-TQFP - same | 44-TQFP - same | 44-VQFP - same footprint area, different pinout |
| Macrocells | 64 | 64 | 64 | 64 | 72 |
| Propagation Delay (tPD) | 25 ns | 10 ns (faster) | 15 ns (faster) | 7 ns (faster) | 10 ns (faster) |
| Supply Voltage (VCC) | 4.5 V to 5.5 V (5 V native) | 4.5 V to 5.5 V (5 V native) | 4.5 V to 5.5 V (5 V native) | 4.5 V to 5.5 V (5 V native) | 3.0 V to 3.6 V (3.3 V only) |
| User I/O Pins | 32 | 32 | 32 | 32 | 34 |
| Programming Interface | JTAG (IEEE 1149.1) ISP | JTAG ISP | JTAG ISP | JTAG ISP | JTAG ISP |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| Approx. Unit Price (1k qty) | $3.66 | Higher (faster grade) | Similar | Higher (BE process) | Similar |
主要差異化特點
- 5 V native supply, no level shifting required (對比XC9572XL-10VQG44)
- Lower power per macrocell vs AS family (對比ATF1504AS-10AU44)
- Higher macrocell density than competing 5 V CPLD (對比XC9536XL-10VQG44)
設計說明
Estimated: at VCC = 5.0 V and ICC = 5 mA typical per macrocell block (4 LABs), the ATF1504ASL-25AU44 draws about 25 mA during active operation. Place a 0.1 uF ceramic decoupling capacitor within 5 mm of each VCC pin (pins 23 and 44) and a 10 uF bulk tantalum or ceramic capacitor near the device. During ISP programming, transient current can rise to 50 mA - ensure your 5 V regulator has at least 100 mA headroom.
The 44-TQFP package benefits from a continuous ground plane on the layer directly beneath the device to provide low-impedance return paths for high-frequency I/O switching. Place the JTAG header (TCK, TMS, TDI, TDO) on the board edge for ISP access; keep JTAG traces under 150 mm to avoid signal integrity issues. Add 4.7 kohm pull-ups on TMS and TDI lines, per the IEEE 1149.1 recommendation in the Microchip datasheet DOC0616.
Do not drive user I/O pins above VCC + 0.5 V or below GND - 0.5 V; absolute maximum stresses will damage the EEPROM cells and degrade program/erase endurance below the 10,000-cycle spec. When migrating from ATF1504AS (legacy AS family) to ATF1504ASL (low-power ASL family), verify macrocell timing budgets because the ASL process has slightly different propagation characteristics. Always erase the device before reprogramming - partial writes can leave residual logic terms.
合規資訊
RoHS and REACH compliant per Microchip product page; lead-free reflow-compatible. Not AEC-Q100 qualified - not recommended for automotive safety-critical applications without further qualification.
